The answer is 1,54 moles.
When 2.5 moles of oxygen react with hydrogen, they react in a 1:2 ratio to produce water. Therefore, 2.5 moles of oxygen will produce 5 moles of water. To convert moles to grams, you'll need to know the molar mass of water, which is approximately 18 grams/mol. So, 2.5 moles of oxygen will produce 90 grams (5 moles x 18 grams/mole) of water.
90 grams is about 0.2 (0.198416) pounds.
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To convert 90 kg to grams, you would multiply 90 by 1000 (since there are 1000 grams in one kilogram), resulting in 90,000 grams.
There are 1000 milligrams in a gram. To convert, you divide by 1000. 90/1000 is 0.09 grams.
To find the number of atoms in 45 grams of Pb (lead), we need to first calculate the number of moles. The molar mass of Pb is approximately 207.2 g/mol. By dividing the given mass by the molar mass, we can find the number of moles. Then, we can convert moles to atoms using Avogadro's number (6.022 x 10^23 atoms/mol).
The answer is 134,645 grams of NaCl.
At standard conditions, 1 mole of hydrogen reacts with 0.5 moles of oxygen to form 1 mole of water. Therefore, to form 5 moles of water, you will need 5 moles of hydrogen and 2.5 moles of oxygen. The molar mass of water is approximately 18 g/mol, so 5 moles of water would weigh 90 grams.
To calculate the number of moles in 5 grams of oxalic acid (C2H2O4), first determine the molar mass of oxalic acid, which is 90.03 g/mol. Then, divide the mass (5 grams) by the molar mass to get the number of moles. In this case, 5 grams is equal to approximately 0.055 moles of oxalic acid.
90 kg = 90 000 gTo convert from kg to g, multiply by 1000.
To find the number of moles in 9.8 grams of Calcium, you first need to calculate the molar mass of Calcium, which is about 40.08 g/mol. Then, divide the given mass by the molar mass: ( \frac{9.8 , \text{g}}{40.08 , \text{g/mol}} \approx 0.245 , \text{moles})
there are zero 1lb in 90 grams.